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FX 65 Training guide
Tools FX 65 Fraction Calculator
Overhead OH 65
Handouts Applicable activities
Activities for the Classroom FX-65 Fraction Calculator
Other materials Quick Reference Guide (inside the calculator cover)
Key Points/ Overview
True fraction display
Fraction and decimal conversions
Integer division (quotient and remainder)
Ability to fix decimal places
Basic scientific functions
Single variable statistics
Super solar power- operates even in lo
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FX 65 Training guide Display Indicators The display window has many indicators that will be displayed when a certain function is performed. Alternatively, it may also show the status of a setting. The following is a list of the display indicators along with a description: Indicator Meaning FIX Number of decimal places is fixed. SCI Number of significant digits is fixed. SIMP Displayed fraction can be simplified. R Remainder of division. ‘ 3-digit separator ( ) Parentheses M A v
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FX 65 Training guide Display Set Up The FX-65 allows you to change the display format for the following: Fixed number decimal places Number of significant digits in scientific notation Engineering notation mode Key Function [FIX] n Sets the number of decimal places according to the value you input for n (0 – 9). [FIX] [.] Clears the decimal place setting. [SHIFT] [SCI] n Sets the number of significant digits according to the value you input for n (0 – 9). [SHIFT] [SCI] [.] Clear
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FX 65 Training guide Basic Arithmetic Calculations Basic Functions and Operations The following are the basic functions and operations of the calculator. Backspaces and deletes the right digit of a displayed input value. [AC] Turns power on. [C] Clears the displayed input value. [SHIFT] Shifts the keyboard and accesses functions marked above the keys. Note: There is no power off key. The calculator automatically turns off about six minutes after you finish using it.
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FX 65 Training guide Fraction calculations and simplification • You can perform addition, subtraction, multiplication, and division. • The result of a calculation that mixes fractions and decimal values is displayed as a decimal value. • Using the [b/c] key, you can enter a fraction with up to 4 digits in both the numerator and denominator. • Results can have up to four digits each for integer, numerator, and denominator. If any part is longer, value is displayed as decimal with error
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FX 65 Training guide % change, when a value is increased From 30 to 36 [36] [ - ] [30] [SHIFT] [%] 20 Percent of increase, when an amount is added. 300 cc is added to 500 cc [300] [+] [500] [SHIFT] [%] 160 Default angle unit setting and conversions [DRG] Changes the default angle unit cyclically between degrees, radians, and grads. [SHIFT] [DRG] Changes the default angle unit cyclically between degrees, radians, and grads, and converts the displayed value accordingly. Pow
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FX 65 Training guide Probability Random number generation [SHIFT] [RAN#] Generates a random number between 0 and 0.999. Permutations and combinations [SHIFT] [nPr] A permutation is a selection of objects in which the order matters. Example: To determine the number of possible different arrangements using 4 items selected from 10 items. [10] [SHIFT] [nPr] [4] [=] 5040 [SHIFT] [nCr] A combination is a selection of objects from a collection and order is irrelevant.
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FX 65 Training guide Memory Memory Calculations The memory function is convenient for calculating cumulative totals. [M+] Adds displayed value to memory. [MR] Recalls the value stored in memory. [SHIFT] [MC] Clears memory. [SHIFT] [M-] Subtracts the displayed value from memory. [SHIFT] [X-M] Swaps the displayed value with the value currently in memory. Constant Memory Calculations A pair of constant memories let you store operators and values. Once stored, a value a
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FX 65 Training guide Trigonometry Be sure to select the angle unit (D, R, G) you want to use before beginning a calculation. Trigonometric/Inverse Trigonometric Functions To calculate the sine, cosine, or tangent of the displayed angle. Example (in degree mode): [30] [sin] (= .5) To calculate the arcsine, arccosine, or arctangent. Example (in degree mode): [.5] [SHIFT] [sin] (= 30) Hyperbolic/ Inverse Hyperbolic Functions To calculate the hyperbolic sine, cosine, or
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FX 65 Training guide Statistics Entering and analyzing statistical data [SHIFT] [STAT] Enters the statistics mode. [COMP] Exits the statistics mode. Note that all input data is deleted. [SHIFT] [SAC] Clears statistical memory. Be sure to perform this operation before inputting new data. [DATA] Inputs the displayed value as data. Press [DATA] twice to input two entries of the same value. (NOTE: This is the “M+” key). [SHIFT] [DEL] Deletes the displayed value as data.
